*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(22, 101, 52, 0.15);
    color: #14532d;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(-2deg); }
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-up {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-up-delay {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-up-delay-2 {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
    animation: float-delay 8s ease-in-out infinite;
    animation-delay: 1s;
}

.animate-fade-in {
    animation: fade-in 0.6s ease-out forwards;
}

.animate-slide-up {
    animation: slide-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.animate-slide-up-delay {
    animation: slide-up-delay 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

.animate-slide-up-delay-2 {
    animation: slide-up-delay-2 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

/* Header */
#site-header {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

#site-header.scrolled {
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(22, 101, 52, 0.08);
}

/* Nav links */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #166534;
    transition: width 0.3s ease;
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile menu */
#mobile-menu.open {
    transform: translateX(0);
}

#mobile-menu.closed {
    transform: translateX(100%);
}

/* Hamburger */
#menu-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#menu-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

#menu-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
}

/* Mobile nav links */
.mobile-nav-link {
    position: relative;
}

.mobile-nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #166534;
    transition: width 0.3s ease;
    border-radius: 1px;
}

.mobile-nav-link:hover::after {
    width: 100%;
}

/* Focus styles */
:focus-visible {
    outline: 2px solid #166534;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #eef0ea 0%, #d6ebd6 100%);
}

/* Smooth image transitions */
img {
    transition: opacity 0.3s ease;
}

img[loading="lazy"] {
    opacity: 0;
}

img.loaded {
    opacity: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f5f5f0;
}

::-webkit-scrollbar-thumb {
    background: #b1d9b1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #7cbf7c;
}